%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : SET616^5 : TPTP v9.3.1. Released v4.0.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% Computer : n011.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Wed Sep 30 08:23:22 AM UTC 2026
% Result : Theorem 0.21s 0.28s
% Output : Refutation 0.21s
% Verified :
% SZS Type : Refutation
% Derivation depth : 19
% Number of leaves : 1
% Syntax : Number of formulae : 33 ( 8 unt; 0 typ; 0 def)
% Number of atoms : 182 ( 63 equ; 0 cnn)
% Maximal formula atoms : 3 ( 5 avg)
% Number of connectives : 191 ( 38 ~; 24 |; 31 &; 94 @)
% ( 0 <=>; 4 =>; 0 <=; 0 <~>)
% Maximal formula depth : 5 ( 3 avg)
% Number of types : 2 ( 1 usr)
% Number of type conns : 12 ( 12 >; 0 *; 0 +; 0 <<)
% Number of symbols : 11 ( 8 usr; 3 con; 0-4 aty)
% Number of variables : 47 ( 22 ^; 21 !; 4 ?; 47 :)
% Comments :
%------------------------------------------------------------------------------
thf(type_def_5,type,
a: $tType ).
thf(type_def_6,type,
sTfun: ( $tType * $tType ) > $tType ).
thf(func_def_1,type,
vAND: $o > $o > $o ).
thf(func_def_2,type,
db0:
!>[X0: $tType] : X0 ).
thf(func_def_3,type,
vNOT: $o > $o ).
thf(func_def_4,type,
vLAM:
!>[X0: $tType,X1: $tType] : ( X1 > X0 > X1 ) ).
thf(func_def_5,type,
sK0: a > $o ).
thf(func_def_6,type,
sK1: a > $o ).
thf(func_def_9,type,
sK2: a ).
thf(f1,conjecture,
! [X0: a > $o,X1: a > $o] :
( ( ( ^ [X2: a] :
( ~ ( X0 @ X2 )
& ( X1 @ X2 ) ) )
= ( ^ [X2: a] :
( ~ ( X1 @ X2 )
& ( X0 @ X2 ) ) ) )
=> ( X0 = X1 ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',cBOOL_PROP_90_pme) ).
thf(f2,negated_conjecture,
~ ! [X0: a > $o,X1: a > $o] :
( ( ( ^ [X2: a] :
( ~ ( X0 @ X2 )
& ( X1 @ X2 ) ) )
= ( ^ [X2: a] :
( ~ ( X1 @ X2 )
& ( X0 @ X2 ) ) ) )
=> ( X0 = X1 ) ),
inference(negated_conjecture,[status(cth)],[f1]) ).
thf(f3,plain,
~ ! [X0: a > $o,X1: a > $o] :
( ( ( ^ [X2: a] :
( ~ ( X0 @ X2 )
& ( X1 @ X2 ) ) )
= ( ^ [X3: a] :
( ~ ( X1 @ X3 )
& ( X0 @ X3 ) ) ) )
=> ( X0 = X1 ) ),
inference(rectify,[],[f2]) ).
thf(f4,plain,
~ ! [X1: a > $o,X0: a > $o] :
( ( ( ^ [Y0: a] :
( ( X1 @ Y0 )
& ~ ( X0 @ Y0 ) ) )
= ( ^ [Y0: a] :
( ( X0 @ Y0 )
& ~ ( X1 @ Y0 ) ) ) )
=> ( X0 = X1 ) ),
inference(fool_elimination,[],[f3]) ).
thf(f5,plain,
? [X1: a > $o,X0: a > $o] :
( ( ( ^ [Y0: a] :
( ( X1 @ Y0 )
& ~ ( X0 @ Y0 ) ) )
= ( ^ [Y0: a] :
( ( X0 @ Y0 )
& ~ ( X1 @ Y0 ) ) ) )
& ( X0 != X1 ) ),
inference(ennf_transformation,[],[f4]) ).
thf(f6,plain,
? [X0: a > $o,X1: a > $o] :
( ( ( ^ [Y0: a] :
( ( X1 @ Y0 )
& ~ ( X0 @ Y0 ) ) )
= ( ^ [Y0: a] :
( ( X0 @ Y0 )
& ~ ( X1 @ Y0 ) ) ) )
& ( X0 != X1 ) ),
inference(rectify,[],[f5]) ).
thf(f7,plain,
( ( ( ^ [Y0: a] :
( ( sK1 @ Y0 )
& ~ ( sK0 @ Y0 ) ) )
= ( ^ [Y0: a] :
( ( sK0 @ Y0 )
& ~ ( sK1 @ Y0 ) ) ) )
& ( sK0 != sK1 ) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0,sK1]),skolemize(X0,sK0),skolemize(X1,sK1)],[f6]) ).
thf(f8,plain,
sK0 != sK1,
inference(cnf_transformation,[],[f7]) ).
thf(f9,plain,
( ( ^ [Y0: a] :
( ( sK1 @ Y0 )
& ~ ( sK0 @ Y0 ) ) )
= ( ^ [Y0: a] :
( ( sK0 @ Y0 )
& ~ ( sK1 @ Y0 ) ) ) ),
inference(cnf_transformation,[],[f7]) ).
thf(f11,plain,
( ( sK0 @ sK2 )
!= ( sK1 @ sK2 ) ),
inference(negative_extensionality,[],[f8]) ).
thf(f12,plain,
( ( $true
= ( sK0 @ sK2 ) )
| ( $true
= ( sK1 @ sK2 ) ) ),
inference(xor_proxy_clausification,[],[f11]) ).
thf(f13,plain,
( ( ( sK0 @ sK2 )
= $false )
| ( $false
= ( sK1 @ sK2 ) ) ),
inference(xor_proxy_clausification,[],[f11]) ).
thf(f19,plain,
! [X1: a] :
( ( ^ [Y0: a] :
( ( sK0 @ Y0 )
& ~ ( sK1 @ Y0 ) )
@ X1 )
= ( ^ [Y0: a] :
( ( sK1 @ Y0 )
& ~ ( sK0 @ Y0 ) )
@ X1 ) ),
inference(argument_congruence,[],[f9]) ).
thf(f20,plain,
! [X1: a] :
( ( ( ^ [Y0: a] :
( ( sK1 @ Y0 )
& ~ ( sK0 @ Y0 ) )
@ X1 )
= $false )
| ( $true
= ( ^ [Y0: a] :
( ( sK0 @ Y0 )
& ~ ( sK1 @ Y0 ) )
@ X1 ) ) ),
inference(iff_proxy_clausification,[],[f19]) ).
thf(f21,plain,
! [X1: a] :
( ( $true
= ( ^ [Y0: a] :
( ( sK1 @ Y0 )
& ~ ( sK0 @ Y0 ) )
@ X1 ) )
| ( ( ^ [Y0: a] :
( ( sK0 @ Y0 )
& ~ ( sK1 @ Y0 ) )
@ X1 )
= $false ) ),
inference(iff_proxy_clausification,[],[f19]) ).
thf(f22,plain,
! [X1: a] :
( ( ( ( sK1 @ X1 )
& ~ ( sK0 @ X1 ) )
= $true )
| ( ( ( sK0 @ X1 )
& ~ ( sK1 @ X1 ) )
= $false ) ),
inference(beta-eta_normalization,[],[f21]) ).
thf(f24,plain,
! [X1: a] :
( ( ( ( sK0 @ X1 )
& ~ ( sK1 @ X1 ) )
= $false )
| ( $true
= ( sK1 @ X1 ) ) ),
inference(and_proxy_clausification,[],[f22]) ).
thf(f25,plain,
! [X1: a] :
( ( $false
= ( sK0 @ X1 ) )
| ( ( ~ ( sK1 @ X1 ) )
= $false )
| ( $true
= ( sK1 @ X1 ) ) ),
inference(and_proxy_clausification,[],[f24]) ).
thf(f26,plain,
! [X1: a] :
( ( $false
= ( sK0 @ X1 ) )
| ( $true
= ( sK1 @ X1 ) )
| ( $true
= ( sK1 @ X1 ) ) ),
inference(not_proxy_clausification,[],[f25]) ).
thf(f27,plain,
! [X1: a] :
( ( $false
= ( sK0 @ X1 ) )
| ( $true
= ( sK1 @ X1 ) ) ),
inference(duplicate_literal_removal,[],[f26]) ).
thf(f32,plain,
! [X1: a] :
( ( $true
= ( ( sK0 @ X1 )
& ~ ( sK1 @ X1 ) ) )
| ( ( ( sK1 @ X1 )
& ~ ( sK0 @ X1 ) )
= $false ) ),
inference(beta-eta_normalization,[],[f20]) ).
thf(f34,plain,
! [X1: a] :
( ( $true
= ( sK0 @ X1 ) )
| ( ( ( sK1 @ X1 )
& ~ ( sK0 @ X1 ) )
= $false ) ),
inference(and_proxy_clausification,[],[f32]) ).
thf(f35,plain,
! [X1: a] :
( ( ( sK1 @ X1 )
= $false )
| ( $true
= ( sK0 @ X1 ) )
| ( $false
= ( ~ ( sK0 @ X1 ) ) ) ),
inference(and_proxy_clausification,[],[f34]) ).
thf(f36,plain,
! [X1: a] :
( ( $true
= ( sK0 @ X1 ) )
| ( $true
= ( sK0 @ X1 ) )
| ( ( sK1 @ X1 )
= $false ) ),
inference(not_proxy_clausification,[],[f35]) ).
thf(f37,plain,
! [X1: a] :
( ( $true
= ( sK0 @ X1 ) )
| ( ( sK1 @ X1 )
= $false ) ),
inference(duplicate_literal_removal,[],[f36]) ).
thf(f43,plain,
( ( $true
= ( sK1 @ sK2 ) )
| ( $true
= ( sK1 @ sK2 ) )
| ( $true = $false ) ),
inference(superposition,[],[f12,f27]) ).
thf(f44,plain,
( ( $true = $false )
| ( $true
= ( sK1 @ sK2 ) ) ),
inference(duplicate_literal_removal,[],[f43]) ).
thf(f45,plain,
( $true
= ( sK1 @ sK2 ) ),
inference(trivial_inequality_removal,[],[f44]) ).
thf(f50,plain,
( ( $true = $false )
| ( $false
= ( sK1 @ sK2 ) )
| ( $false
= ( sK1 @ sK2 ) ) ),
inference(superposition,[],[f13,f37]) ).
thf(f52,plain,
( ( $false
= ( sK1 @ sK2 ) )
| ( $true = $false ) ),
inference(duplicate_literal_removal,[],[f50]) ).
thf(f53,plain,
( $false
= ( sK1 @ sK2 ) ),
inference(trivial_inequality_removal,[],[f52]) ).
thf(f60,plain,
$true = $false,
inference(superposition,[],[f45,f53]) ).
thf(f62,plain,
$false,
inference(trivial_inequality_removal,[],[f60]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET616^5 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.06 % Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.07/0.20 % Computer : n011.cluster.edu
% 0.07/0.20 % Model : x86_64 x86_64
% 0.07/0.20 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.20 % Memory : 8046.5625MB
% 0.07/0.20 % OS : Linux 6.8.0-71-generic
% 0.07/0.20 % CPULimit : 300
% 0.07/0.20 % WCLimit : 300
% 0.07/0.20 % DateTime : Tue Sep 29 13:39:31 UTC 2026
% 0.07/0.20 % CPUTime :
% 0.07/0.20 Running run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.07/0.23 Running higher-order theorem proving
% 0.07/0.24 Running: /export/starexec/sandbox/solver/bin/vampire-ho --input_syntax tptp --output_axiom_names on --mode casc -m 16384 --cores 7 -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.21/0.28 % (104700)Detected a higher-order problem, will run a greedy HOL sequence.
% 0.21/0.28 % (104709)dis+21_4_fde=none:e2e=on:si=on:uwa=off:foolp=on:random_seed=1356683103:i=24:av=off:rtra=on_2999 on theBenchmark for (2999ds/24Mi)
% 0.21/0.28 % (104709) found proof, printing to "/export/starexec/sandbox/tmp/vampire-proof-104700-104709"...
% 0.21/0.28 % (104709)...printing done.
% 0.21/0.28 % (104709)Refutation found. Thanks to Tanya!
% 0.21/0.28 % SZS status Theorem for theBenchmark
% 0.21/0.28 % SZS output start Proof for theBenchmark
% See solution above
% 0.21/0.28 % (104709)------------------------------
% 0.21/0.28 % (104709)Version: Vampire 5.0.1 (Release build, commit 5ef7c2677 on 2026-07-16 16:54:09 +0200)
% 0.21/0.28 % (104709)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.21/0.28 % (104709)CaDiCaL version: 2.1.3
% 0.21/0.28 % (104709)Termination reason: Refutation
% 0.21/0.28 % (104709)Time elapsed: 0.002 s
% 0.21/0.28 % (104709)Peak memory usage: 12 MB
% 0.21/0.28 % (104709)Instructions burned: 3 (million)
% 0.21/0.28 % (104700)Success in time 0.025 s
% 0.21/0.28 % Vampire exiting
%------------------------------------------------------------------------------